Software Engineer, Intern

Duolingo's mission is to develop the best education in the world and make it universally available. As an intern, you'll join a team that cares about educating users, experimenting with big ideas, making fact-based decisions, and finding innovative solutions to complex problems.

• Contribute to full-stack software projects by developing, testing, and maintaining features and services.
• Develop, release, and maintain services and/or infrastructure.
• Lead individual project priorities, deadlines, and deliverables.
• Contribute to code reviews and collaborate across teams to ensure quality and scalability.

• Graduating December 2027 - August 2028.
• Pursuing a B.S. or M.S. degree in Computer Science or a related technical field (e.g., math, physics, or data science).
• Dedication to Duolingo's mission of universally available education.
• Programming experience in one or more of the following languages: Java, Python, Kotlin, or Swift.
• 12 weeks of consecutive availability during one of the listed internship periods: May 24, 2027 - August 13, 2027, or June 14, 2027 - September 3, 2027.
• Deadline to apply: September 30, 2026.

• Close support from your mentor and your team.
• Working on features and projects that will have real impact for learners and internal users.
• A fun, mission-driven environment with opportunities to grow as an engineer and make meaningful connections.

• Developing a GPT-4 chat interface for internal tools to streamline content creation.
• Integrating A/B testing framework with observability stack to flag experiments that introduce errors.
• Spanish audio lessons to improve listening comprehension.
• Crafting new lessons to teach Coordinates in the Math course.
• Porting large features to new platforms (iOS, Android, web).
• Dashboards and tooling for site reliability insights.
• Crafting new microservices from scratch.

• Language learning opportunities.
• Catered in-house lunches, and breakfast and dinner options.
• Company-wide Hackathon.
• PTO and company holidays.
• Frequent company-wide dinners, monthly celebrations, social clubs, and more.

Hourly range for this internship is $54—$56 USD.

Apply through the Duolingo careers page. For accommodations, contact accommodations@duolingo.com.